Date Calculators

12 tool(s) available

Days Between Dates

Calculate the exact number of days, weeks, months, years, and working days between any two calendar dates. Includes leap year handling and weekend exclusions for event planning and deadline tracking.

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Add / Subtract Days

Add or subtract days, weeks, months, or years from any starting date to find the target future or past calendar date. Ideal for warranty expirations, legal notice periods, and project milestones.

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Business Days Calculator

Count total working business days and billable hours between two dates, automatically excluding Saturdays, Sundays, and regional public holidays. Perfect for SLA timelines and payroll cycles.

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Business Date Calculator

Add or subtract working business days from any start date while automatically skipping weekends and holidays. Determine exact shipping delivery dates, court filing deadlines, and project completion dates.

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Age Calculator

Calculate your exact age today in years, months, weeks, days, hours, and minutes. Discover your next birthday countdown, total days lived, and chronological milestones for official forms and retirement.

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Weekday Calculator

Find the exact day of the week (Monday through Sunday) for any past, present, or future historical date. Explore calendar trivia, zodiac signs, day of the year number, and Gregorian calendar facts.

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Week Number Calculator

Determine the official ISO-8601 calendar week number for any specific date, or look up start and end dates for any week of the year. Essential for corporate fiscal planning, manufacturing, and logistics.

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Time Duration Calculator

Calculate the total elapsed duration and difference between two times with decimal hours and unpaid break deductions. Perfect for employee timesheets, freelance billing hours, and shift work logs.

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Countdown to Any Date

Create a live, ticking real-time countdown timer to any upcoming event, birthday, wedding, vacation, holiday, or product launch deadline with customizable alert sounds and fullscreen mode.

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Leap Year Calculator

Check whether any year is a leap year using the official Gregorian 4/100/400 divisibility rule. Browse upcoming leap years, February 29 leap day trivia, and historical calendar shifts.

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Date Pattern Calculator

Generate comprehensive recurring date schedules for daily, weekly, bi-weekly, semi-monthly, or monthly recurrence intervals. Export meeting calendars, loan installments, and recurring paydays.

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Half Birthday Calculator

Find your exact half birthday date (6 months from birth) and celebrate life milestone days such as 1,000, 5,000, 10,000, or 20,000 days alive with fun astrological and chronological facts.

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